Projectile.



Paolis-m5.

APPLICATION FILED APR. 22, i916.

Patened Oct. 17,1916.

F. H. CAMPBELL;

ma 6 J7 WIT/1158858:

Z 'o all whom t may concern:

FRNK HOWABD CAMPBELL, OF LEXVISBURG', 'WEST VERGINIA.

PBOJECTLE.

Speccaton of Letters Eatent.

latented wet. il?, 1.9i@

pplcaton led April 22, 1816. Serial No. 92,886.

Be it known that l, FRANK H. CAMPBELL,

'a citizen of the United States, and a resident of Lewisburg, in the'. county of Greenbrier and State of Vest Virginia, have invented av certain new and useful Improvement in. Projectiles, of which the following is a specification.

My invention relatcsto improvements in projectiles, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a projectile having means which prevents the gases 4ci the discharge from rushing lpast the rojectile While the latter is in the bore ci t e gun.

A further object of my inventionis to provide a projectile having means for holding the gases'from the explosive charge hack behind the projectile, While at the saine time preventing undue erosion of the Wells or" the here.

A. further object of my vinvention is 'to provide a comparatively simple and cheap means for accomplishing the above named objects.

Other objects and vadvantages will appear in the followingl specification, and the novel :tentures of the invention will he particularly pointed ont in the appended claims.

My invention is illustrated in the accompanying drawings forming part o1 this applica ion, in which:

Figure l is side view 'of the projectile. .2 is a side vie v, certain parts being shown in section. Fig. 3 shotis a section through a portion of the gun with the proectile therein. fl is a perspective view of one ci the sott metal disks. Fig. 5 is av perspective vievv of the soft metal Washer. Fig. 6 is aperspective view of the nut, and Fig. 7 is a. sectional view of a nicdied form or the device. l

The -hotly ci' the v.rojectil'e is shown at l and it is provided with the usual hand 2 ot' soft metal such opper .ln the rear end oi"- the body portion cal extension having a cylindrical portion 3 and a threaded portion el. This threaded1'4 portion is provided with lett hand thread which is'arranged to receive'a nut 5 also provided4 with left hand threads..

A soft metal annuler dislr 6 isdisposed on he used ivi is provided a cylindrior face 6a, the opposite face 6l being dished so as to maire the disk thicker at the outside edge than at the inside. A series et sof.-

rnet-al disks i" is provided, these dislrs being' preerably'ci2 copper and 1seing' dished shown in Fig. 4. The nut 5 has a vconvert face 5, shown, ivhich'lits against the concave face of one oit the disks.

ln assexnhlin the device, the disk G .is placed in posi-ti n, :ritter which the disks er rings 7 are slipped on the cylindrical portion. 3 and the nut 5 is screwed on the threaded portion el so es hold the parts in the posi- 1lig. 2. The projectile is novi' tion shown in l ready to he placed in the here of a gun, such as' that shown at vVilhcn the charge is lred, the gases. 'torce the soft metal disks l' the Washer or disk mashed ont of shape. the tightening o1G the @s i7, since the rot-ation le right which vis-c-.ansed here, .will force the mit is will he seen from' disks 7 es Well as the are in close contact with thereby preve ting projectile. ist the f -e parte forwardly against which tends to he This is increased by nut bellino. the d ,1. f3.. the Ui soft meta iva Athe Walls i the rush o same time soft metal tends Le the. Walls of the h ln i" have shown a modifies form of the device in which lubricating material of any snitahle compo. tionnay he pls between the copper disks 7, so that on each discharge the re ot the ger. is lubricated. ln lieu. of the cer spindle 3 e. holt may t.; e hef l of suitable size and left hand threed, working with similar threads cut inthe end of the projectile. in this term, 'the action of the head. of the holt on ,a copper or other .metal disk would he tlieffsame as with the nut just described.

lt. will he seen that l: have provided prejectile having a circular iange made up oit the soitmetal disks r e" expansion of the 'dan e causing sionoi:v the soft il l Washer ag Walls of the `eer-e ther t thetlange in preventing passageci the gases ast the roiectile.

duc erosion of #landed ehy conne ating .with` said projectile the -threaded end portion, a washer of soft metal carried lay/said reduced -portion, said Washer haring' a dat face, disposed adjacent to the body portion of the projectile, the opposite face being dished, a series of annular disks of soft metal and of lgreater diameter than said washer, said disks being dished to conform With the disbed face oi the Washer, and a nut having a convex 'face to engage one of the dished -disks for forcing the said disks against said Washer.

. The combination with a projectile, of

carried by said reduced portion, l'said Washerl haring a flat face disposed adjacent to the body portion of the projectile, the opposite face being` dished, a series of annular disks ot soft metal and of greater diameter than 25 said Washer, said disks being dislied to e0n form with the disl'ied face of the Washer, and anut on said threaded end portion for forcing said disks against said Washer.

FRANK HOVRD CAMPBELL. 

